neovim/init.vim

call plug#begin('~/.local/share/nvim/plugged')

Plug 'davidhalter/jedi-vim'
Plug 'ncm2/float-preview.nvim'
Plug 'dense-analysis/ale'
Plug 'jacoborus/tender.vim'
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'airblade/vim-gitgutter'
Plug 'scrooloose/nerdtree'
Plug 'gleam-lang/gleam.vim'
Plug 'cespare/vim-toml'
Plug 'rust-lang/rust.vim'
Plug 'vim-scripts/DrawIt'

call plug#end()

let g:airline_theme='papercolor'
let g:airline#extensions#ale#enabled=1

inoremap <expr><tab> pumvisible() ? "\<C-n>" : "\<tab>"
inoremap <expr><S-Tab> pumvisible() ? "\<C-p>" : "\<S-TAB>"

let g:jedi#completions_enabled=0
let g:jedi#use_splits_not_buffers="right"

" Preview window is floating
let g:float_preview#docked=0
let g:float_preview#max_width=100
let g:float_preview#max_height=150
let g:float_preview#auto_close=0

set tabstop=4
set softtabstop=4
set shiftwidth=4
set textwidth=79
set expandtab
set autoindent
set fileformat=unix
set number
" Hide top preview window, use float_preview instead
set completeopt-=preview
" Enable folding on indent
set foldmethod=indent
set foldlevel=79
set omnifunc=ale#completion#OmniFunc

" Lint and check types
let b:ale_linters={
\ 'python': ['mypy', 'pyls', 'pylint'],
\ 'ocaml':  ['merlin'],
\ 'rust':   ['analyzer', 'cargo']
\ }
let b:ale_fixers = {
\ 'rust':   ['rustfmt'],
\ 'python': ['autopep8'],
\ 'ocaml':  ['ocamlformat']
\}

let g:ale_rust_rustfmt_options='--edition 2018'

let g:ale_fix_on_save=1
let g:ale_lint_on_save=1
let g:ale_lint_on_enter=0
let g:ale_list_window_size=20
" Use .venv as a global default
let g:ale_virtualenv_dir_names=['.venv']
let g:ale_completion_enabled=1
let g:ale_sign_error="✗"
let g:ale_sign_warning="⚠"
let g:ale_echo_msg_error_str = 'E'
let g:ale_echo_msg_warning_str = 'W'
let g:ale_echo_msg_format = '[%linter%] %s [%severity%]'

" Enable warnings about trailing whitespace for all files.
let b:ale_warn_about_trailing_whitespace=1

nmap <leader>e :ALEDetail<CR>
noremap <leader>d :ALEGoToDefinition<CR>
noremap g] :ALEGoToDefinition<CR>
noremap <leader>h :ALEHover<CR>

" ALE colors
highlight ALEError ctermbg=DarkRed ctermfg=Black
highlight ALEWarning ctermbg=Yellow ctermfg=White

" Use TAB to switch between buffers
noremap <tab> :bn<CR>
noremap <S-tab> :bp<CR>

" Highlight trailing whitespace (darker red) and remove all with Ctrl+k
highlight WhitespaceEOL ctermbg=red guibg=#ab0d0d
match WhitespaceEOL /\s\+\%#\@<!$/
nnoremap <C-k> :let _s=@/<Bar>:%s/\s\+$//e<Bar>:let @/=_s<Bar><CR>

" Much better with Tomorrow Night Bright color theme set in alacritty
" set background=dark
highlight Search ctermfg=Black
highlight Comment ctermfg=Grey
highlight SignColumn ctermbg=0
highlight LineNr ctermbg=0 ctermfg=248
highlight Folded ctermbg=Green ctermfg=Black
highlight Pmenu ctermbg=gray guibg=gray

highlight GitGutterAdd    ctermfg=Green
highlight GitGutterChange ctermfg=Red
highlight GitGutterDelete ctermfg=DarkRed
highlight GitGutterAddLine ctermbg=LightGreen
highlight GitGutterChangeLine ctermbg=Yellow
highlight GitGutterDeleteLine ctermbg=LightRed
highlight GitGutterChangeDeleteLine ctermbg=LightRed

nmap ]h <Plug>(GitGutterNextHunk)
nmap [h <Plug>(GitGutterPrevHunk)

let g:gitgutter_sign_added='+'
let g:gitgutter_sign_modified='±'
let g:gitgutter_sign_removed='-'
let g:gitgutter_sign_removed_first_line='^'
let g:gitgutter_sign_modified_removed='-'
let g:gitgutter_map_keys=0
let g:gitgutter_set_sign_backgrounds=1

" Toggles on different plugins/modes
nmap <F1> :ToggleMouse<CR>
set pastetoggle=<F2>
nmap <F3> :set nonumber!<CR>
nmap <F4> :GitGutterBufferToggle<CR>
nmap <F5> :NERDTreeToggle<CR>
nmap <F6> :GitGutterLineHighlightsToggle<CR>

autocmd FileType yaml setlocal ts=2 sts=2 sw=2 expandtab

" Maintain undo history between sessions
if !isdirectory("/tmp/.vim-undo-dir-vladan")
  call mkdir("/tmp/.vim-undo-dir-vladan", "", 0700)
endif
set undodir=/tmp/.vim-undo-dir-vladan
set undofile
" Enable vimrc files per project
set exrc
" Disable unsafe commands in project vimrc
set secure